1047835640 has 32 divisors (see below), whose sum is σ = 2358640080. Its totient is φ = 418954752.

The previous prime is 1047835637. The next prime is 1047835643. The reversal of 1047835640 is 465387401.

It is an interprime number because it is at equal distance from previous prime (1047835637) and next prime (1047835643).

It is a junction number, because it is equal to n+sod(n) for n = 1047835594 and 1047835603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047835643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128567 + ... + 136473.

Almost surely, 2^1047835640 is an apocalyptic number.

1047835640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1047835640 is an abundant number, since it is smaller than the sum of its proper divisors (1310804440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1047835640 is a wasteful number, since it uses less digits than its factorization.

1047835640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11231 (or 11227 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 1047835640 is about 32370.2894642603. The cubic root of 1047835640 is about 1015.6975120961.

The spelling of 1047835640 in words is "one billion, forty-seven million, eight hundred thirty-five thousand, six hundred forty".